This is a tissue diagnosis, but one needs to conduct an examination and find the impairments present, which may be resulting in the patient's activity limitations and participation restrictions (as per the ICF model). I'm not certain where you practice but in the U.S., at least, we don't typically practice by relying on other health professionals' examinations and prescriptions for what PTs should do. Some medical diagnoses or disorder classifications come with a set of signs and symptoms that people recognize as patterns, but individuals will not necessarily present the same for a variety of reasons. Spondylosis is the term for degenerative joint disease (OA) in the spine. Although people tend to associate it with decreased mobility, the precise presentation is not just one thing or always the same, as stated above; it must be assessed before one can come up with a reasonable intervention plan. One might find that joint mobilization or traction to be helpful; if the presentation is acute, interventions applied gently to promote and guide healing may be appropriate. Again, the therapy/advice must be individually tailored.